the 40-year-old 's son cooper blue and daughter kingsley rainbow were born on monday via a surrogate , with dylan and her paul , 44 , confirming to people on wednesday afternoon that they ` are celebrating the birth of their twins ' .
a spokesperson for the couple added to the outlet that ` her parents , fashion icons ralph and ricky lauren , are overjoyed to welcome their first grandchildren and witness their daughter usher in the next generation ' .
during the interview , which took place shortly before the birth of their twins , dylan noted that she had already come up with a few adorable nicknames picked out for her son and daughter .